Finding the Fourth Proportional to 74,782.41, 112,194.82 and 30,440.99
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Solution
The fourth proportional to 74,782.41, 112,194.82 and 30,440.99 is: 45,670.12
Step by Step Solution
- Step 1: Write the proportion equation
74,782.41 : 112,194.82 = 30,440.99 : x - Step 2: Convert to fraction form
74,782.41/112,194.82 = 30,440.99/x - Step 3: Cross multiply
74,782.41x = 112,194.82 × 30,440.99 - Step 4: Simplify right side
74,782.41x = 3,415,321,393.67 - Step 5: Solve for x
x = 3,415,321,393.67/74,782.41 - Step 6: Final answer
x = 45,670.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.